摘要:
On Windows, restricted files can be accessed via os.DirFS and http.Dir. The os.DirFS function and http.Dir type provide access to a tree of files rooted at a given directory. These functions permit access to Windows device files under that root. For example, os.DirFS( C:/tmp ).Open( COM1 ) opens the COM1 device. Both os.DirFS and http.Dir only provide read-only filesystem access. In addition, on Windows, an os.DirFS for the directory (the root of the current drive) can permit a maliciously crafted path to escape from the drive and access any path on the system. With fix applied, the behavior of os.DirFS( ) has changed. Previously, an empty root was treated equivalently to / , so os.DirFS( ).Open( tmp ) would open the path /tmp . This now returns an error.
安全等级: Low
公告ID: KylinSec-SA-2023-1036
发布日期: 2023年2月6日
关联CVE: CVE-2022-41720
On Windows, restricted files can be accessed via os.DirFS and http.Dir. The os.DirFS function and http.Dir type provide access to a tree of files rooted at a given directory. These functions permit access to Windows device files under that root. For example, os.DirFS( C:/tmp ).Open( COM1 ) opens the COM1 device. Both os.DirFS and http.Dir only provide read-only filesystem access. In addition, on Windows, an os.DirFS for the directory (the root of the current drive) can permit a maliciously crafted path to escape from the drive and access any path on the system. With fix applied, the behavior of os.DirFS( ) has changed. Previously, an empty root was treated equivalently to / , so os.DirFS( ).Open( tmp ) would open the path /tmp . This now returns an error.
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2022-41720 | KY3.4-4A | golang | Unaffected |
| CVE-2022-41720 | KY3.4-5 | golang | Unaffected |
| CVE-2022-41720 | KY3.5.1 | golang | Unaffected |
| CVE-2022-41720 | KY3.5.2 | golang | Unaffected |
